| /* Copyright 2013-2014 IBM Corp. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or |
| * implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef __CONSOLE_H |
| #define __CONSOLE_H |
| |
| #include "unistd.h" |
| #include <lock.h> |
| |
| /* |
| * Our internal console uses the format of BML new-style in-memory |
| * console and supports input for setups without a physical console |
| * facility or FSP. |
| * |
| * (This is v3 of the format, the previous one sucked) |
| */ |
| struct memcons { |
| uint64_t magic; |
| #define MEMCONS_MAGIC 0x6630696567726173LL |
| uint64_t obuf_phys; |
| uint64_t ibuf_phys; |
| uint32_t obuf_size; |
| uint32_t ibuf_size; |
| uint32_t out_pos; |
| #define MEMCONS_OUT_POS_WRAP 0x80000000u |
| #define MEMCONS_OUT_POS_MASK 0x00ffffffu |
| uint32_t in_prod; |
| uint32_t in_cons; |
| }; |
| |
| extern struct memcons memcons; |
| |
| #define INMEM_CON_IN_LEN 16 |
| #define INMEM_CON_OUT_LEN (INMEM_CON_LEN - INMEM_CON_IN_LEN) |
| |
| /* Console driver */ |
| struct con_ops { |
| size_t (*write)(const char *buf, size_t len); |
| size_t (*read)(char *buf, size_t len); |
| bool (*poll_read)(void); |
| int64_t (*flush)(void); |
| }; |
| |
| extern struct lock con_lock; |
| |
| extern bool dummy_console_enabled(void); |
| extern void force_dummy_console(void); |
| extern bool flush_console(void); |
| extern bool __flush_console(bool flush_to_drivers); |
| extern void set_console(struct con_ops *driver); |
| |
| extern void console_complete_flush(void); |
| |
| extern int mambo_console_read(void); |
| extern void mambo_console_write(const char *buf, size_t count); |
| extern void enable_mambo_console(void); |
| |
| ssize_t console_write(bool flush_to_drivers, const void *buf, size_t count); |
| |
| extern void clear_console(void); |
| extern void memcons_add_properties(void); |
| extern void dummy_console_add_nodes(void); |
| |
| #endif /* __CONSOLE_H */ |